Cubic speaker



FIG. 1 shows a perspective view of a cubic speaker;

FIG. 2 shows a front view of the cubic speaker of FIG. 1;

FIG. 3 shows a back view of the cubic speaker of FIG. 1;

FIG. 4 shows a left view of the cubic speaker of FIG. 1;

FIG. 5 shows a right view of the cubic speaker of FIG. 1;

FIG. 6 shows a top view of the speaker of FIG. 1; and,

FIG. 7 shows a bottom view of the cubic speaker of FIG. 1.

The broken lines illustrate environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a cubic speaker, as shown and described. 